A5006705949- Genetically Modified Organisms Research
- Physiological and biochemical adaptations
- Marine and coastal ecosystems
- Ecology and Vegetation Dynamics Studies
- Ecosystem dynamics and resilience
- Neural dynamics and brain function
- Insect Resistance and Genetics
- Species Distribution and Climate Change
- Ocean Acidification Effects and Responses
- Evolution and Genetic Dynamics
- Neuroscience and Neuropharmacology Research
- Functional Brain Connectivity Studies
- Neural Networks and Applications
- Forest ecology and management
- Animal Ecology and Behavior Studies
- Autism Spectrum Disorder Research
- French Language Learning Methods
- Fish Ecology and Management Studies
- Microbial Community Ecology and Physiology
- Health, Medicine and Society
- Education, sociology, and vocational training
- Cell Image Analysis Techniques
- Information Technology and Learning
- CRISPR and Genetic Engineering
- Protist diversity and phylogeny
Université de Rennes
2024
Centre National de la Recherche Scientifique
2008-2024
Swedish University of Agricultural Sciences
2021-2024
Ecosystèmes, Biodiversité, Evolution
2024
University of Zurich
2014-2020
Universität Hamburg
2020
Laboratoire d’Imagerie Biomédicale
2014-2016
Sorbonne Université
2014-2015
Écologie, Systématique et Évolution
2004-2014
AgroParisTech
2008-2014
Summary Laboratory microcosm experiments using protists as model organisms have a long tradition and are widely used to investigate general concepts in population biology, community ecology evolutionary biology. Many variables of interest measured order study processes patterns at different spatiotemporal scales across all levels biological organization. This includes measurements body size, mobility or abundance, understand dynamics, dispersal behaviour ecosystem processes. Also, variety...
Organismal abundance tends to decline with increasing body size. Metabolic theory links this size structure energy use and productivity across levels of biological organization, predicting a size-abundance slope -0.75 that is invariant environments. We tested whether the relationship robust gradient protist species richness (1 6 species), temperature (15 25 C), time. Our results support expected for relationship, but we found interactive effects indicating not invariant. In high-richness...
Coastal ecosystems are increasingly influenced by the lateral transport of organic matter, where pigmented dissolved carbon (DOC) contributes to water darkening and affects nutrient dynamics. These changes coincide with rising phosphorus (DOP) inputs, which have implications for eutrophication cycling. However, it is unclear how bioavailable DOP (BDOP) pool responds individual interactive ecosystem-level effects darkening, increased DOC, higher inorganic concentrations. To explore these...
Global environmental change has negative impacts on ecological systems, impacting the stable provision of functions, goods, and services. Whereas effects individual changes (e.g. temperature or in resource availability) are reasonably well understood, we lack information about if how multiple interact. We examined interactions among four types disturbance (temperature, nutrient ratio, carbon enrichment, light) a fully factorial design using microbial aquatic ecosystem observed responses...
The development of video-based monitoring methods allows for rapid, dynamic and accurate individuals or communities, compared to slower traditional methods, with far reaching ecological evolutionary applications. Large amounts data are generated using which can be effectively processed machine learning (ML) algorithms into meaningful information. ML uses user defined classes (e.g. species), derived from a subset (i.e. training data) video-observed quantitative features phenotypic variation),...
Predator responses to warming can occur via phenotypic plasticity, evolutionary adaptation or a combination of both, changing their top-down effects on prey communities. However, we lack evidence how warming-induced changes in predators may influence natural food webs. Here, ask whether wild fish subject across multiple generations differ impacts communities compared with nearby conspecifics experiencing thermal regime. We carried out common garden mesocosm experiment larval perch ( Perca...
Recent experimental evidence on the clustering of glutamate and GABA transporters astrocytic processes surrounding synaptic terminals pose question functional relevance astrocytes in regulation neural activity. In this perspective, we introduce a new computational model that embeds recent findings neuron-astrocyte coupling at mesoscopic scale intra- inter-layer local circuits. The consists mass for compartment an astrocyte which controls dynamics extracellular concentrations. By arguments...
Abstract Aims To determine how changes in land use, climate and shrub cover affect the invasion dynamics of native ( Pinus sylvestris L.) introduced nigra Arn. subsp. ) pines grasslands. analyse these factors interact seedling recruitment, a bottleneck lifecycle many trees. Such information is required to manage species. Location Grands Causses, calcareous plateaus (Southern France). Methods We used both published unpublished demographic dispersal data assess population growth speed invading...
Abstract The temperature‐size rule (TSR) describes the inverse relationship between organism size and environmental temperature in uni‐ multicellular species. Despite TSR being widespread, mechanisms for shrinking body with warming remain elusive. Here, we experimentally test three hypotheses (differential development growth [DDG], maintain aerobic scope regulate oxygen supply [MASROS] supply–demand [SD] hypothesis) potentially explaining using aquatic protist Colpidium striatum gradually...
Abstract Coastal eutrophication due to excessive anthropogenic nutrient loading is a major threat worldwide, and especially in estuaries semi‐enclosed waterbodies, like the brackish Baltic Sea. In addition, coastal waters may become darker (coastal darkening) increased input of colored compounds from terrestrial run‐off sediment resuspension. Still, effects darkening on food web responses are unknown. mesocosm experiment with benthic pelagic habitats, we manipulated loading, presence fish...
Abstract Predator responses to warming can occur via phenotypic plasticity and evolutionary adaptation, resulting in changes their prey communities. However, we lack evidence of how warming-induced predators influence the food web. Here, ask whether fish subject long-term across multiple generations differ impacts on communities compared nearby conspecifics experiencing a natural thermal regime. We carried out common garden mesocosm experiment with larval perch ( Perca fluviatilis ),...
The identification and quantification of biomarkers or proteins is a real challenge in allowing the early detection diseases. functionalization biosensor surface has to be properly designed prevent nonspecific interactions detect biomolecule interest specifically. A multilayered nanoarchitecture, based on polyelectrolyte multilayers (PEM) sequential immobilization streptavidin biotinylated antibody, was elaborated as promising platform for label-free sensing targeted proteins. We choose...
Neural mass modeling is a part of computational neuroscience that was developed to study the general behavior neuronal population. This type mesoscopic model able generate output signals are comparable experimental data, such as electroencephalograms. Classically, neural models consider two interconnected populations: excitatory pyramidal cells and inhibitory interneurons. However, many authors have included an feedback on cell Two distinct approaches been developed: direct main population...
Summary This article presents some statistical methods for estimating the parameters of a population dynamics model annual plants. The takes account reproduction, immigration, seed survival in bank, and plant growth. data consist number plants several developmental stages that were measured populations few consecutive years; they are incomplete since seeds could not be counted. It is assumed there no measurement errors or binomial frequent. Some developed within framework equations Bayesian...
Abstract Theory predicts that organism–environment feedbacks play a central role in how ecological communities respond to environmental change. Strong feedback causes greater nonlinearity between change and ecosystem state, increases the likelihood of hysteresis response change, augments possibility alternative stable regimes. To illustrate these predictions their dependence on temporal scale, we simulated minimal model. test predictions, manipulated strength metabolism dissolved oxygen...
Shallow coastal areas often have high productivity and diversity, in part due to the availability of light nutrients. At same time, they are exposed multiple environmental pressures, such as browning eutrophication. Browning is mainly caused by runoff bringing coloured dissolved organic matter (CDOM), reducing waters, whereas eutrophication nutrient loading, leading symptoms algal blooms. Existing variation further change nutrients could large implications for aquatic food webs, including...
Multitype branching processes with immigration in one type are used to model the dynamics of stage-structured plant populations. Parametric inference is first carried out when count data all types observed. Statistical identifiability proved together derivation consistent and asymptotically Gaussian estimators for parameters ruling population model. However, many ecological data, some stages (i.e. types) cannot be observed practice. We study which mechanisms can still estimated given...